#include <iostream>
#include <array>
int main() {
std::array<int, 5> arr {1, 2, 3, 4, 5};
for (const auto &item : arr) {
std::cout << item << " ";
}
std::cout << "\n";
arr.fill(0);
for (const auto &item : arr) {
std::cout << item << " ";
}
return 0;
}
/*
run:
1 2 3 4 5
0 0 0 0 0
*/